# NTSB CHI88DEP01: Grumman G-44, N1173V, Delevan, WI, October 1, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: October 1, 1987, 10:30 local (15:30 UTC)
- Place: Delevan, WI
- Coordinates: 42.620346, -88.630729 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.6203&lon=-88.6307&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report February 24, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 13873
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI88DEP01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13873/pdf
- Page: https://openairdocs.org/ntsb/CHI88DEP01

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - on ground/water, takeoff - roll/run
  - weather condition - crosswind (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
  - weather condition - gusts (contributing factor)
- On ground/water collision with object, takeoff - roll/run
  - object - tree(s) (contributing factor)
- Nose over, takeoff - roll/run
  - terrain condition - rough/uneven (contributing factor)

## Analysis

ON INITIAL TAKEOFF ROLL THE AIRCRAFT EXPERIENCED A LOSS OF CONTROL IN A STRONG CROSSWIND, DEPARTED THE RUNWAY TO THE LEFT, STRUCK A TREE LINE AND OVER TURNED.

## Aircraft

- Registration: [N1173V](https://openairdocs.org/deregistered/N1173V-1988-03-21), registration cancelled 1988-03-21, S/N 1383 (OpenAirDocs)
- Reported make and model: GRUMMAN G-44
- Registry model: [Grumman G-44](https://openairdocs.org/model/grumman-g-44) (registry code 3951502) (OpenAirDocs)
- Category: Airplane
- Serial number: 1383
- Airframe hours: 3580
- Engines: LYCOMING GO-480-BID 270 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Clarence G. Nissen
- Registered owner: Crane Engineering Corp.
- Airworthiness certificate: Standard, Normal
- Departed: C59, DELEVAN, WI
- Destination: MKE, MILWAUKEE, WI
- Airport: C59, Lake Lawn, runway 18, 4,400 × 80 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 84; private; airplane ratings: single-engine sea, multi-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 8,962 total, 2 in the last 90 days, 2 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 25 knots, gusting 32
- Visibility: 12 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 28 °F
- Altimeter: 29.00 inHg
- Observed at: MKE, 40 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19871001058579A](https://openairdocs.org/incident/19871001058579A), Oct 1, 1987: Gulstm G44, Delevan, WI, Substantial damage. Lost control on takeoff in a severe crosswind. Went off the runway hit a tree stump and flipped over. Age a factor.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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